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Lookup NU author(s): Professor Tamara Rogers
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To date, asteroseismology has provided core-to-surface differential rotation measurements in eight main-sequence stars. These stars, ranging in mass from similar to 1.5-9M(circle dot), show rotation profiles ranging from uniform to counter-rotation. Although they have a variety of masses, these stars all have convective cores and overlying radiative regions, conducive to angular momentum transport by internal gravity waves (IGWs). Using two-dimensional numerical simulations, we show that angular momentum transport by IGWs can explain all of these rotation profiles. We further predict that, should high mass, faster rotating stars be observed, the core-to-envelope differential rotation will be positive, but less than one.
Author(s): Rogers TM
Publication type: Article
Publication status: Published
Journal: The Astrophysical Journal. Letters
Print publication date: 18/12/2015
Online publication date: 18/12/2015
Acceptance date: 10/11/2015
ISSN (print): 2041-8205
ISSN (electronic): 2041-8213
Publisher: Institute of Physics Publishing
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